diff --git a/.gitattributes b/.gitattributes
index c94f121..b571d14 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,4 @@
-
+*.Roff linguist-detectable=false
 
 * linguist-vendored
-*.js linguist-vendored=false
+*.js linguist-vendored=true